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Clinical trial information and results are updated daily from ClinicalTrials.gov. The latest data update was conducted on 06/15/2021.

Molecular Stratification Profiling Protocol in Metastatic Castration Resistant Prostate Cancer (mCRPC) - MAESTRO

Clinicaltrials.gov identifier NCT03934164

Recruitment Status Recruiting

First Posted May 1, 2019

Last update posted July 23, 2020

Study Description

Brief summary:

This study is a prospective, observational, molecular stratification profiling study. Patients with mCRPC who have received at least one standard treatment for mCRPC will be approached to participate in MAESTRO. Patients must have archival tumour available and be willing to undergo a fresh tumour biopsy for molecular analyses. Tumour tissue (archival and fresh), research blood samples and saliva will be sent to the central laboratory for analysis to identify molecular aberrations through targeted or broader molecular analyses (e.g. exome, transcriptome) and orthogonal assays (e.g. immunohistochemistry; digital droplet PCR). When the results are available, depending on patients choice, the results will be discussed. If significant results are indicated, patients will be recommended to have follow up with a cancer geneticist to discuss the implications of these results for their personal and family's health. There is a safety follow up 30 days after collection of study biopsy or blood samples. Patients will also be followed up for overall survival and subsequent anticancer treatment every 6 monthly via medical notes or telephone calls.

  • Condition or Disease:Metastatic Prostate Cancer
    Castration-resistant Prostate Cancer
  • Intervention/Treatment:
  • Phase: N/A
Detailed Description

This study is a prospective, observational, molecular stratification profiling study. mCRPC patients who have received at least one standard treatment for mCRPC will be approached to participate in MAESTRO. Patients must have archival tumour available and be willing to undergo a fresh tumour biopsy for molecular analyses. Following consent to MAESTRO, tumour tissue (archival and fresh), along with the research blood samples and saliva sample will be sent to the central laboratory for analysis to identify molecular aberrations through targeted or broader genomic analyses (e.g. exome, transcriptome) and orthogonal assays (e.g. immunohistochemistry; digital droplet PCR). Patients will not receive any treatment as part of MAESTRO. Results of the molecular characterisation will be provided to the treating investigator to be fed back to the patient, depending on patient's choice on disclosing the results. The following research samples are collected under as part of this study: - Where available, excess archival tumour tissue from previous biopsies or routine surgical procedures will be retrospectively collected. - Fresh tissue specimens will be obtained for patients who are undergoing standard of care interventions OR patient will undergo a bone marrow biopsy or an ultrasound /CT guided tumour biopsy of a safely accessible lesion. Fresh tumour specimens will be processed and/or frozen. - Sequencing analysis of tissues will be done and results will be made available in real time. Clinically significant results will be disclosed to patients and their clinicians as per patient consent. - Research samples for blood, serum, plasma and saliva will be collected at the time of the biopsy. Patients who elected (optional consent) to receive sequencing results regarding incidental clinically significant findings, will be referred for genetic counselling.

Study Design
  • Study Type: Observational
  • Estimated Enrollment: 600 participants
  • Observational Model: Other
  • Time Perspective: Prospective
  • Official Title: MAESTRO: Molecular Stratification Profiling Protocol in Metastatic Castration Resistant Prostate Cancer (mCRPC)
  • Actual Study Start Date: November 2019
  • Estimated Primary Completion Date: March 2024
  • Estimated Study Completion Date: March 2025
Outcome Measures
  • Primary Outcome Measures: 1. Number of molecular aberrations in diagnostic archive and fresh mCRPC tissue [ Time Frame: 4-6 weeks ]
    The prevalence of molecular aberrations in diagnostic archive and fresh mCRPC will be calculated with 95% confidence intervals.
  • Secondary Outcome Measures: 1. Quantify the association between molecular aberrations and baseline prognostic characteristics [ Time Frame: 4-6 weeks ]
    The association between identified molecular aberrations and baseline characteristics, known to be prognostic factors, will be quantified. Associations will be determined using Fisher's exact test for categorical characteristics and for continuous characteristics either a Wilcoxon rank sum test or t test will be used depending on the results of normality testing.
  • 2. Changes in molecular aberrations [ Time Frame: 4-6 weeks ]
    Changes in the molecular features of tumour biopsies acquired at diagnosis and fresh mCRPC will be quantified to demonstrate any differences in the molecular aberrations within the same patient's tumour.
  • 3. Safety - Review of biopsy-related adverse events: occurrence of at least one grade 3 or 4 event [ Time Frame: 30 days after study biopsy/blood collection ]
    All events experienced by patients related to study procedures (collection of a fresh biopsy or blood samples) will be recorded and graded using CTCAE version 5 criteria and specifically the occurrence of at least one grade 3 or 4 event. Adverse events will be summarised by grade according to the worst grade experienced. In addition, the most frequently observed AEs will be summarised. The overall proportion of patients experiencing at least one grade 3 or 4 event will be presented by study procedure.
  • 4. Time to development of CRPC [ Time Frame: From the date of diagnosis to the date of confirmed mCRPC, through study completion, up to 5 years ]
    This is defined in whole days as the time from the date of diagnosis to the date of confirmed CRPC. The median time and interquartile range will be determined per molecular aberration. Analyses will be conducted per molecular aberration and will use the Kaplan-Meier method and Cox proportional hazard models. Analyses will adjust for known baseline characteristics and previous treatments received using multivariable Cox proportional hazard models.
  • 5. Overall Survival (OS) [ Time Frame: From the date of confirmed CRPC to the date of death from any cause, , through study completion, up to 5 years ]
    OS will be measured from the date of CRPC to the date of death (whatever the cause). Survival time of living patients will be censored on the last date a patient is known to be alive or lost to follow-up. Analyses will use the Kaplan Meier method and Cox proportional hazard models by molecular aberration. Multivariable Cox proportional hazard models will include established prognostic factors such as site of disease.
  • Other Outcome Measures: 1. Circulating Free DNA [ Time Frame: 4-6 weeks ]
    To evaluate the agreement between molecular aberrations found in cfDNA and tumour biopsies (fresh and archival) from primary (prostate) or metastatic site. Agreement will be determined per paired sample for each molecular aberration using Cohen's kappa coefficient.
  • 2. Circulating Tumour Cells [ Time Frame: 4-6 weeks ]
    To acquire DNA from pure CTCs. To evaluate the agreement between molecular aberrations found in CTCs and tumour biopsies (fresh and archival) from primary (prostate) or metastatic site. Agreement will be determined per paired sample for each molecular aberration using Cohen's kappa coefficient.
Eligibility Criteria
  • Ages Eligible for Study: 18 Years and older (Adult, Older Adult)
  • Sexes Eligible for Study: Male
  • Accepts Healthy Volunteers: No
  • Sampling Method: Non-Probability Sample
  • Study Population: Participants will be recruited from participating sites in the UK. Potential participants will be identified and discussed in oncology clinics and Multi-Disciplinary Team (MDT) meetings.
Criteria

Inclusion Criteria:

1. Male aged ≥18 years.

2. Histologically confirmed metastatic castrate resistant adenocarcinoma of the prostate

3. Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0 - 2.

4. Surgically or medically castrated, with testosterone levels of <50 ng/dL (<2.0 nM). 5. Confirmed metastatic disease on imaging. 6. Patients with tumour deemed by the designated investigator as safely suitable for fresh biopsy AND who are medically fit (according to local practice) to undergo a biopsy or procedure to acquire tumour tissue AND previously collected tumour specimens from prior surgery or biopsy available for analyses. An mCRPC biopsy collected within 6-months of trial entry can be used instead of this fresh biopsy if available and passes laboratory quality control requirements. 7. Willing and able to comply with the requirements of the sample collection including fresh tumour biopsy. 8. The subject is capable of understanding and complying with the protocol requirements and has given written informed consent. Exclusion Criteria: 1. The presence of any haematological disorders, including coagulation disorders, which would be a contraindication if patient were to undergo a biopsy. 2. Any psychiatric illness/social situations that would limit compliance with study requirements. 3. Presence of any concurrent condition or situation, which, in the investigators opinion, may put the patient at significant risk, may confound the study results or may interfere significantly with the patient's participation in the study.

Contacts and Locations
Contacts

Contact: Stephanie Burnett, BSc 02087224261 maestro-icrctsu@icr.ac.uk

Contact: Ajit Sarvadikar maestro-icrctsu@icr.ac.uk

Locations

United Kingdom, Surrey
The Royal Marsden NHSFT
Sutton

Sponsors and Collaborators

Institute of Cancer Research, United Kingdom

Prostate Cancer UK

Investigators

Principal Investigator: Johann de Bono The Institute of Cancer Research and The Royal Marsden NHS Foundation Trust

More Information
  • Responsible Party: Institute of Cancer Research, United Kingdom
  • ClinicalTrials.gov Identifier: NCT03934164 History of Changes
  • Other Study ID Numbers: ICR-CTSU/2016/10059
  • First Posted: May 1, 2019 Key Record Dates
  • Last Update Posted: July 23, 2020
  • Last Verified: July 2020
  • Individual Participant
    Data (IPD) Sharing
    Statement:
  • Plan to Share IPD: Undecided
  • Studies a U.S. FDA-regulated Drug Product: No
  • Studies a U.S. FDA-regulated Device Product: No
  • Keywords provided by Institute of Cancer Research, United Kingdom: prostate molecular stratification
  • Additional relevant MeSH terms: Prostatic Neoplasms